It is an object to provide a tire having well-improved fuel efficiency, wet grip performance, abrasion resistance, and wet grip performance at a later stage of abrasion. Provided is a tire comprising a tread part of a rubber composition comprising a rubber component comprising an isoprene-based rubber and a styrene-butadiene rubber, wherein a vinyl content of the styrene-butadiene rubber is greater than 26 mol %, wherein a given ratio A of an ash content of the rubber composition is greater than 25 mol %, wherein the tread part comprises two or more circumferential main grooves extending in a tire circumferential direction, and land parts partitioned by the circumferential main grooves, wherein at least one land part of the land parts comprises at least one given flask-like circumferential groove extending in the tire circumferential direction.

According to an exemplary embodiment of the present invention, provided is a latex composition for dip molding, which includes a copolymer latex formed by polymerizing an isoprene monomer, an ethylenically unsaturated nitrile monomer, and an ethylenically unsaturated acid monomer, wherein a dip-molded article made of the latex composition for dip molding exhibits a durability test result of 45 minutes or more.

According to an exemplary embodiment of the present invention, provided is a latex composition for dip molding, which includes a copolymer latex formed by polymerizing an isoprene monomer, an ethylenically unsaturated nitrile monomer, and an ethylenically unsaturated acid monomer, wherein a dip-molded article made of the latex composition for dip molding exhibits a durability test result of 45 minutes or more.

A rubber compound having at least two glass transition temperatures Tg1 and Tg2 is based on at least two rubber compositions C1 and C2, C1 comprising at least one elastomer E1 with Tg1, C2 comprising at least one elastomer E2 with Tg2 and a reinforcing filler, E2 being different from E1, where Tg1 is above or equal to -50° C., the rubber compound satisfies Tg1-Tg2 ≥ 23° C. and has a loss factor profile exhibiting the change in tan δ as a function of the temperature in °C. over a range extending from -80° C. to 60° C. at a frequency of 10 Hz and a constant stress of 0.7 MPa and exhibiting one or more peaks, such that all the tan δ peaks present at a temperature above Tg1 have a width at half height less than or equal to 23° C.; and E1 is predominant.

A rubber compound having at least two glass transition temperatures Tg1 and Tg2 is based on at least two rubber compositions C1 and C2, C1 comprising at least one elastomer E1 with Tg1, C2 comprising at least one elastomer E2 with Tg2 and a reinforcing filler, E2 being different from E1, where Tg1 is above or equal to -50° C., the rubber compound satisfies Tg1-Tg2 ≥ 23° C. and has a loss factor profile exhibiting the change in tan δ as a function of the temperature in °C. over a range extending from -80° C. to 60° C. at a frequency of 10 Hz and a constant stress of 0.7 MPa and exhibiting one or more peaks, such that all the tan δ peaks present at a temperature above Tg1 have a width at half height less than or equal to 23° C.; and E1 is predominant.

A tread comprising a plurality of grooves and manufactured using a rubber compound comprising at least one cross-linkable unsaturated chain polymeric base, a filler, a vulcanization system and a wax comprising at least 50% by weight nonacosandiols. At least part of said grooves has a hydrophobic surface structure comprising a plurality of protruding elements.

A tread comprising a plurality of grooves and manufactured using a rubber compound comprising at least one cross-linkable unsaturated chain polymeric base, a filler, a vulcanization system and a wax comprising at least 50% by weight nonacosandiols. At least part of said grooves has a hydrophobic surface structure comprising a plurality of protruding elements.

The present disclosure provides a tire in which cracks or other defects on the surface of a tire component can be reduced to provide an excellent market life. A tire including a rubber layer and satisfying the following relationships (1) and (2): E1/E2×100>25 (1); and E1/E2×T×100>50 (2) wherein E1 denotes the fracture energy (MPa.Math.%) determined by cutting a No. 7 dumbbell-shaped specimen cut out of the rubber layer, heat-treating the specimen with the cut sections attached to each other at 170° C. for 12 minutes, and then stretching and deforming the specimen; E2 denotes the fracture energy (MPa.Math.%) determined by heat-treating a No. 7 dumbbell-shaped specimen cut out of the rubber layer at 170° C. for 12 minutes and then stretching and deforming the specimen; and T denotes the thickness (mm) of the rubber layer.

The present disclosure provides a tire in which cracks or other defects on the surface of a tire component can be reduced to provide an excellent market life. A tire including a rubber layer and satisfying the following relationships (1) and (2): E1/E2×100>25 (1); and E1/E2×T×100>50 (2) wherein E1 denotes the fracture energy (MPa.Math.%) determined by cutting a No. 7 dumbbell-shaped specimen cut out of the rubber layer, heat-treating the specimen with the cut sections attached to each other at 170° C. for 12 minutes, and then stretching and deforming the specimen; E2 denotes the fracture energy (MPa.Math.%) determined by heat-treating a No. 7 dumbbell-shaped specimen cut out of the rubber layer at 170° C. for 12 minutes and then stretching and deforming the specimen; and T denotes the thickness (mm) of the rubber layer.

The present invention relates to a resin composition comprising: a base resin comprising a petroleum resin of which at least a part is hydrogenated or non-hydrogenated; and an additive comprising a modified C.sub.9 polymer having a structure in which a molecular weight modifier binds to at least one terminal of the two terminals of the petroleum resin of which at least a part is hydrogenated or non-hydrogenated. The present invention also relates to a gas barrier film comprising the resin composition, and a tire.